Dimmer.



VV. E, COCHRAN.

DIMMR. APPLICAUON m50 MM I9. ma.

Patented Deo. 1916.

nvenftor ttorn @ys linaithan enigma WESLEY E. COCHRAN, F CLEVELAND, OHIO, ASSGNOBJ'TG 'ICI-IE ART METAL MANU I IFACTURING COMPANY, F CLEVELAND, OHIO.

DIMMER.

Specification of Letters Patent.

application md may 19, 1915. serial no. 29,136.

T o all whom it may concern Be it known that l, lVEsLnY E. COCHRAN, a citizen of the United States, residing at Cleveland, in the county oitb Cuyahoga and State of Ohio, have invented a new and useful Dimmer, oi which the following is a specilication.

The device forming the subject matter o'l1 this application is a dimmer or shield adapt ed to be applied to an electric light bulb oli that type commonly employed upon automobiles. y

The dimmer forming the subject matter of this application is adapted to be snapped onto the bulb and to rotate thereon.

The invention aims particularly to provide novel means whereby the dimmer may be held upon the metal shank of the bulb for rotation.

lt is within the province oi the disclosure to improve generally and to enhance the utility of devices of that type to which the present invention appertains.

With the above and other objects in nflew which will appear as the description pro ceeds, the invention resides in the combination and arrangement of parts and 'in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed can be made within the scope of what is claimed, without departing from the spirit of the invention.

l'n the accompanying drawingz-Figure 1 shows the invention, side elevation; l? 2 an elevation showing one end of the structure; Fig. 3 is an elevation showing the opposite end of the structure; Fig. 4 is `a section taken approximately on the line 11m-4; oii Fig.v2; Fig. 5 is a fragmental perspective showing a portion of the dimmer.

The dimmer forming the subject matter of this application preferably is made of metal .throughout and is a one piece structure, the

interior of the dimmer being enameled, silvered, or otherwise constructed to afford an efficient reflecting surface.

The dimmer comprises a body l if hemispherical form, having a flaring marginal flange The body 1 and the flange constitute a shell in which is formed, near one edge of the shell, an opening designated by the reference character 3 andpreferably of circular outline. Opposite to the opening 3, the liange Q is provided With a marginal notch l located opposite to the opening 3, the liar-ing disposition oi the liange 2 With ree spect to 'the body l serving to form, at the points where the notch l'intersects the outer edgeot the flange 2, a pair of resilient, approaching, gripping prongs which extend outwardly beyond the spherical surface den'ned by the outer face of the body 1. In practice, there is no prominent and distinct line of demarcation between the bod l and the flange the flange, however, flaring sufieiently to throw the prongs 5 outwardly, as clearly shown in Fig. 5.

The im'ention is adapted to be employed in combination with an electric lamp lembodying a bul-b (i having a teat 7 and a metal shank t3. The bulb 6 is of spherical outline.

ln p tical operation, the teat 7 is thrust tlfirough the opening 3l and the shank 8 is received in the notch 4l. of hemispherical form, it is obvious that the prongs 5 extend past the diameter of the shank S and constitute a means whereby the dimmer is held for rotation on the lamp, it being possible to rotate the dimmer so that it may shield any part of the bulb 6.

Especial attention is directed to the ilaring flange 2, and to the prongs 5. Since the flange flares and since the notch 4 intersects the flan-ge, the prongs 5 are made to extend outwardly beyond the spherical surface defined by the outer face of the body l and consequently, these prongs are given a resiliency which they would not possess if the device were otherwise constructed. 1t is possible, therefore, to snap the shank 8 readily Within the contour of the notch 4.

Having thus described the invention, What is claimed A, Vdimmer for electric lamp bulbs, comprising a hemi-spherical body provided With a teat-receiving journaling opening located within the contour of the body, and provided in its edge with a parti-circular notch 410- cated opposite to the opening, the constitu- Since the body l isv meme? xlimeteril of the 'body being continuous n testimony that I daim the foregoing as [adjacent the lnotczh,` the eometrcel center my own, have hereto aixed 'my signature ofphe notch being set bec from the edge of in the presence of two witnesses.

@he body, .whereby 1the edge of the notch will WESLEY E. COCHRAN. fperetegwith 'the edge of the body to form y Witnesses: y

eeutelfyfpented, gripping prongs which plo JOSEPH LENIHAN, 

